Plot 2D graph enhanced

The “Graph in 2D” feature introduced in May 2017 is being improved gradually, and is now able to do much more than its simple name implies : let’s have a look at this amazing feature for student !

[instead of illustrating this blog post with usual linear curves, parabolas or hyperbolas… I choose emblematic curves instead, and mentioned the name of the mathematicians having discovered or studied them : enjoy this journey into the world of Mathematics !]

Simple curves

Obviously, you can plot the curve of an equation with unknowns x and y, in a Cartesian coordinate system.

Equilateral clover (also called “trisectrice de Longchamps”, studied by G. de Longchamps in 1884)

Note in the above example that the equation doesn’t need to be written such as y = f ( x ).

You may even insert the graph on your note after resizing the plot area if necessary. The pasted graph is not interactive though, so you’d better ajust the zoom first.

Curve with parameters

More useful, you can add parameters to your equation, in order to change the proportions of the curve :

Please note that :
– the legend may be exhibited moving the cursor over the ⓘ symbol at the bottom left,
– the legend are not carried forward when you drag the graph in your note,
– the color of the curves in the graph do not match those of the inked equation.

Also, I tried to plot both equations above in the same graph (clover and lemniscate) but it didn’t worked : OneNote offered no option in this instance, except ink to math…

In fact, it seems that Microsoft was simply announcing support for multiple equations plotted in the same graph, as illustrated in the previous section.

And I am not merely quibbling about wording (function or equation ?) : as a matter of fact, experimenting with the same equation written in similar ways (equation & function), I noticed that OneNote makes a confusion with the f in f ( x ) , believing it’s a parameter…